The only place I've ever seen a Niva in the flesh/rusted sill was the somewhat incongruous setting of the Caribbean coast of Venezuela. It belonged to a French guy, coincidentally enough, who was trying to set up a yoga retreat in the jungle, and would go off on inland saunties in pursuit of the perfect property. He was having a nightmare with the bureaucracy, and was thinking of jacking the whole idea in. I imagine that given how things have panned out in the country, they will have done him a favour if they defeated his yogic patience.
But I doubt he would have managed to offload his Niva - everyone there seemed to be driving fancy Ford Broncos or locally produced Toyota Land Cruisers. Or nothing at all, with little middle ground.